Remote control device for carburetors



: Nov. 4, 1930 F. L..HAMMER El Al REMOTE CONTROU DEVICE FOR CARBURETORS Filed July 19 1928 j upoini.

Patented Nov. 4,; 1

' Forums/run Lli-IAMMEROF BnAnronn, woonnurrn, SMITH, or wns'r iiAVEILikND.

swan ESBORN, orBnAnronn, oonnncrioor, assieuon's T MALLEABLE'IRON rrr- ".I.I1\TGS-COMPANY, orBRANronn-oonnnomcur j; 1 REMOTE oonrnon nnvion ron oAn-BUnE'rons 1 I Application filed July 19,

This invention relates-to control-devices for internal combustion-engines, andmore particularly to a means, for controlling an internal combustion engine from a remote In some classes of internal combustion engines, the control for what is commonly termed the choke or they means forenrich ing the mixture during the starting of the 10 engine, is separatefrom the vaccelerating means, or the means which controls the vol-f time as distinguished from the mixtureof the charge passing -1nt0, the engine. With cerlarly with those uesd upon motor-boats, the same valve structure, or atany'rate, the same control lever is used for both the choking of the engine and the varyingof the charge,

1 so'as to determine thespeed, or in brief, the

choke and acceleration are controlled by different adjustments of the same means.

Itis especially desirable in connection with. internal combustion engines used upon moton boats that a speed control be -provided so i i that it may be regulated from a point remote from the engine, and the presentinvention" is particularly concerned with such devices although, of course, it is not necessarily ,limited to engines used in -motor-boats.

connection with so-called outboard motors.

One problem which arises in this connection, however, especially with engines which have a common control for the choke and accelerator, is that while it is desirable to control the acceleration from a remote point, it is usually convenient to control the choke from a point adjacent the engine, andfor this reason it is often necessary to disconnect the remote control in order to choke the.

tain, types of engines, however, and particu this is desired.

Such devices are alsoparticularly useful in 192s. .-Seria1 1\T o. 294,021.

the engine it is not. always feasible to, place a stop "upon the fcontrol lever to insurethat the valve fnotpass the fullspeed posi-z tion andparti mixture 7 i Oneobject of our invention, therefore, is to provide a control device for carburetors, such. that the acceleration of the engine may be efliciently controlled fromla remote point, and when desired, the engine maybe choked ally 'shutoif "them of the P1 M *QFFICE for starting purposes by meansadjacent the motor itself. g H

Another-object of our 'inv ention is tofpro: vide a remote control for accelerating the motor which may be conveniently and easily disconnected .to permit; the motor to be choked atwill; L k

Still another object of our invention isto provide a remote control for. accelerating an internal combustion motor which will be positively prevented from passing beyond the full speed position, and at the same time may readily'be disconnected to allow the choke valveto be moved into chokingposition when Sen another object a bur sea-ion fis to provide separate speed control andchokew members for a carburetor, so arranged that I one maybe operated from a remote point, and may be readilydisconnectedfromv the otherso as not ,tointerfere with the op eration o'fthe latter.

i To these and other ends, "the invention consists inthenovelfeatures and combinas 1 tionsof. parts to be hereinafter described and claimed.

In the accompanying drawings :j

Fig. l is a side elevational view of a car- 'bur'etor nvention;

and associated parts, embodying our 1 Fig. 2 is a top plan view. the-same;

ig. 3 is' a sectional vieWthrough-the car- Fig. 4 is asectionalview on line-44 of Fig. 2, showing the valve in a position different from that shown in Fig. 3; i a

F g; 5 is a sectional view, similar to Figs.

3 and 4, showing still another position of the valve, and i 6 is a bottom plan view of anther the carburetor showing the controlling levers. To illustrate a preferred embodiment of our invention, we have shown a form of carburetor 10, into which air is admitted through the passage 11, and fuel through the passage 12, the fuel and air being mixed within the chamber 13 and passing to the engine through tity of air passing into the chamber 13, so

that a rich mixture is delivered to the engine through the intake 14. When the valve, however, is turned into the position shown in Fig. 5, the wing 15 partially obstructs the mouth of the intake 14, so as to allow a relatively small quantity of the charge ofinixed fuel and air to pass to the engine. Likewise, when the parts are in the position shown in Fig. 4, the

' mouth of the intake 14 is unrestricted, allowing the full charge to pass to the engine,

which is the high speed position of the valve, Fig. showing a low speed position.

The valve wings 15 and 16 are in the form of carburetor shown, a part of a drum 1? rotatably mounted within the. chamber 13 and secured to a shaft 18, which as shown in Fig. 6, for example, projects from the carburetor casing so that the control members may be mounted thereon. It will be understood that the carburetor heretofore described, is shown for the purpose of illustration only, and our invention is not limited in its application to any specific type of carburetor.

Uponthe extended end of the stem or shaft 18 is loosely mounted a crank arm or lever '19, the'free end of this arm carrying a pin 20 having a wire 21 secured .thereto by means of the screw 23. This wire is designed to be passed through a hollow tube 24 to a remote point, at which poi nt it may be connected to a suitable form of lever (not shown), for operation. The tube 24 will be secured at its end adjacent the motor to a clamp 25, mounted in turn upon a part 26 of the motor. It will be understood that upon reciprocation of; the wire in well known manntr, the controller arm 19 will be moved in a clockwise and anticlockwise direction, as shown in Figs. 3 ande.

The control arm 19 is mounted onthe stem 18, by means of an opening 27 through a col-.

' theposition ofthe controller arni19, shown in Figal and 4,, is adapted to contact withan adjustable set screw 30, so as to prevent the arm 19 being drawn downwardly, as shown in these figures, beyond the full speed position of the valve, as shown in Fig. 4.

The stem 18 extends beyond the controller arm 19, which may be termed the accelerator arm, and has secured thereto a second controller arm 31, which may be termed the choke arm. This arm is also provided with an open.

ing 32 which receives the end of the stem, and the arm is secured to the stem by'means of a set screw 33. Pivoted to an'ear 33 upon the arm 31, isa detent 34,. provided with a tooth 35, designed to enter a slot 36 formed in the collar 28' of the acceleration controller 19.

A spring, which in this instance is in the form of a leaf spring 37, is secured by the screw 38 to the choke controller 31, the free end of the spring bearing against a surface 39 of the detent to releasably hold it'out of engagement with the acceleration lever 19, and this spring is also adapted to engage a si ailar surface ll) on the detent 3%. to releasably hold the latter in the position of 'engagement with the acceleration controller 19, wherein the tooth lies within the notch or recess 36.

As shown in full. lines in Fig. 6, the acceleration controller 19 and the choke controller or arm 31 are disconnected. In this position of the parts, it will be apparent that the controller 19 will rock freely upon the stem 18 and cannot effect any movement of the latter or the valve wings 15 and 16 controlled thereby. When, however, the detent 34 is moved into the dotted line position shown in this figure, wl erein the tooth 35 lies within the slot 36, the choke controller will be connected to the acceleration controller to move therewith, and hence a move ment of the latter will effect a movement of the choke controller,and accordingly a move ment of the stem 18 to which th choke controller is rigidly secured, and likewise, a movement of the valve wings 15 and16. I

The operation of our improvements is as follows: When it desired to start the motor, the operator moves the detent to the position shown in. full lines in Fig. 6, and m ves the controlling arm. 31. down to the choke position of'the valve shown in Fig. 3. It will be understood, of course, that if the two controller members were connected together, this could not he donc,.as the stop 29 would prevent such movement by contact with the stop screw 30. The engine may now be started and the valve moved to the proper position to keep the same in operation. After the engine is inoperation and it is desired to control the same from a romote point, the arm 19in moved until the slot 36 is opposite the detent 34;, when the latter will be moved to the dotted line .position'shown in Fig. 6, and the tooth 35 engaged in the slot. The spring 3'? will then contact with. the surface 40 "on the detent to hold the latter in t will be understood engaging position. that with the parts n thlsposition, the wire 21 maybe reciproea-ted to cause a correspond mg osclllation of the controller arm 19, winch through its connection with the controller 31 and stem 18, 'will'etfect the movement of e V Wing 15 to operate the motor at the proper speed.

It hasalrc'ady been explained that if the Wire 21 is" moved in a direction to'pull the" arml9 downwardly, .as shown in Fig.1, it

cannot move the controllers 19 and 81 past the full speed position shown in Fig. l, on account of the contact oiv the stop member 29 with the stop screw 30(- The HIOVGlDGIltOf the controller 19 upwardly from the position shown in Fig. 1, will, however, cause the movement of the valve to the slow speed position shown in Fig. 5.'

It will be apparent that we have provided an eificient remote controlling device for in ternal combustion engines, such that the speed may be efiectively regulated from a remote point, and at the same time the movement of the control valve beyond the full speed position into thechoke position W111 be effectively preventech At the same time theremote control device may be easily and valve, a controlling arm adapted to be connected to said valve, meansfor hunting the movement of'said arm, means for actuating said arm from a remote point, a second controller arm connected to said valve and having an unlimited oscillatory movement, and means to disconnect said first named arm from the carburetor valve to permit movement of the latter by the second named arm beyond the position defined by the limiting means. a I g 2. In a control device for a carburetor valvehaving a choke position, a full speed positionand a slow speed position, an operating member secured to sa1d valve, a controlling arm connected to said operating member, means to limit the movement of said arm to prevent movement of the valve beyond thefull speed position in one direction, means for actuating said arm from a remote point, a second controlling arm connected to said operating member, and means for disconnecting the first arm from the operating member whereby it may be moved by the second arm member, one of said controlling members having a free oscillatorymovement,.and the other having a limitedoscillat'ory movement, and means for disconnecting sa1d last named controlling member from the, operating member to "permit free movement of the latter by. the controllingmember having unlimited movement.

beyond the position defined by the limiting .memb .3. In a control for carburetor valves, an 'operating member for the valve, a pair of oontrolling members secured to the operating 4. -A carburetor valve having a'choke positon and a speed regulating position, a pair of controlling levers each of which-is adapted to be connected to the valve to move the same, and means for breaking the connection between one of said levers and the valve to per-' mit the valve to move independently thereof.

5.-A carburetor valve having a choke po-,

sition and a speed regulatingposition, an

oscillatable member secured to said valve,,a I 7 controller a. arm secured to; sa1d -member, a

second controller arm loosely mounted on sa1d member, means for operatlng saldcontroller arm from a remote point, and means for connecting the two arms together.

6. A carburetor'having' a'c-ombined throttle and choke valve, an oscillatable member connected to said valve, a controller arm se cured to said member, a second controller arm loosely mounted on'said member and operable from a remote point, andmeans for connecting said second controller arm to and disconnecting itfrom; said oscillatable member. V p e 7 A carburetor having a combined throttle and choke valve, anoscillatable member connected to valve, a controller arm secured to said member, a second controller arm loosely mountedpon said member and operablefrom a remote point, andmeans for connecting said-second arm to and disconnecting it-from'the firstarm to permit said valve to'be operated by said second armor independently thereof.

8. A carburetor having a combined choke and throttle valve, and an operating stem for said valve, va controller arm secured to sa1d stem, a second controller'armloosely mounted on said stem'and operable from a remote point, and a detent mounted on one of said arms and engageable with the other thereof to connect said second arm to the stem. a 1

In witness; whereof, we have hereunto set our hands this 17th day of July, 1928.

FORRESTER L; HAMMER, WOODRUFF B. SMITH. SWAN ESBORN. 

